I have the following script that I use to determine drive types. Most USB drives return as a Removable Drive type, but the Lexar Jumpdrive returns as a Fixed Drive. Does anyone know of a better way to determine if a removable drive is plugged in to the computer (Camera, USB Drive, etc)? Is there a way to determine if a removable drive is a USB drive?

use strict;
use Win32::API;
$|=1;
binmode(STDOUT);
getDrivesInUse();
###############
sub getDrivesInUse{
    my (@dr, $i);
    my %DriveType=(
         1=>"Unknown Root",
         2=>"Removable",
         3=>"Fixed",
         4=>"Mapped",
         5=>"CDRom",
         6=>"RAMDisk",
        );
    my $GetLogicalDrives = new Win32::API("kernel32", "GetLogicalDrive
+s", [], 'N') || return $^E;
    my $bitmask = $GetLogicalDrives->Call();
    print "bitmask:\r\n$bitmask\r\n\r\n";
    for $i(0..31) {
        if ($bitmask & 2**$i){
            my $drive=chr(ord("A")+$i);
            my $type=getDriveType($drive);
            print "$i\. Drive: $drive [$type][$DriveType{$type}]\r\n";
            }
        }
    }
###############
sub getDriveType ($) {
    my $drive = shift;
    return undef unless $drive =~ s/^([a-z])(:(\\)?)?$/$1:\\/i || $dri
+ve =~ s/^(\\\\\w+\\\w+\$?)(\\)?$/$1\\/;
    my $GetDriveType = new Win32::API("kernel32", "GetDriveType", ['P'
+], 'N') or return;
    my ($lpDirectoryName) = $drive;
    my $type = $GetDriveType->Call( $lpDirectoryName );
    return $type;
    }
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